872408786885 has 8 divisors (see below), whose sum is σ = 1053823595136. Its totient is φ = 693304995600.

The previous prime is 872408786867. The next prime is 872408786891. The reversal of 872408786885 is 588687804278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-872408786885 is a prime.

It is a super-2 number, since 2×872408786885² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577753409 + ... + 577754918.

It is an arithmetic number, because the mean of its divisors is an integer number (131727949392).

Almost surely, 2^872408786885 is an apocalyptic number.

It is an amenable number.

872408786885 is a deficient number, since it is larger than the sum of its proper divisors (181414808251).

872408786885 is a wasteful number, since it uses less digits than its factorization.

872408786885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155508483.

The product of its (nonzero) digits is 385351680, while the sum is 71.

The spelling of 872408786885 in words is "eight hundred seventy-two billion, four hundred eight million, seven hundred eighty-six thousand, eight hundred eighty-five".